CN201069439Y - Coating ammonia sensor - Google Patents
Coating ammonia sensor Download PDFInfo
- Publication number
- CN201069439Y CN201069439Y CNU2006201550527U CN200620155052U CN201069439Y CN 201069439 Y CN201069439 Y CN 201069439Y CN U2006201550527 U CNU2006201550527 U CN U2006201550527U CN 200620155052 U CN200620155052 U CN 200620155052U CN 201069439 Y CN201069439 Y CN 201069439Y
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- gas
- gold electrode
- gas sensitive
- sensitive material
- ceramic tube
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Abstract
The utility model discloses a coated ammonia gas sensor which mainly comprises a gold electrode, a heater wire, a gas-sensitive material, a ceramic tube, and a platinum wire. The gold electrode, as a film, is coated on the ceramic tube. The heater wire is positioned inside the ceramic tube. The platinum wire is oppositely jointed with the gold electrode. The gas-sensitive material is coated on the surface of the ceramic tube, and is preferably nano-sized indium oxide gas-sensitive material. Compared with the prior art, the utility model employs nano-sized indium oxide as gas-sensitive material, and has the advantages of good responsivity and selectivity to ammonia gas, high detection sensitivity, low detection lower limit, rapid response and recovery, good stability, and low working temperature.
Description
Technical field
The utility model discloses a kind of ammonia gas sensor, particularly relate to a kind of coating type ammonia sensor.
Background technology
Ammonia is a kind of alkaline matter, and it has stronger corrosive attack to institute's contact material, and particularly the skin histology to animal and human body has corrosion and spread effect, it can absorb the moisture in the skin histology, make the histone sex change, make the tissue fat saponification, and destroy membrane structure.The ammonia that just is low concentration also is that harm and dysgenic is arranged to health.Therefore determine the content of ammonia in the air rapidly and accurately, for the improvement of air ambient provides according to having great importance.The monitoring method of country's recommendation at present is the nessler reagent spectrophotometric method, and this method remolding sensitivity is higher, but poor selectivity is not suitable for field monitoring.From 1962, T.Seiyama proposes conductor oxidate first to have since the gas sensing property, and the research of solid gas sensor obtains develop rapidly, developed to the direction to microminiaturized and collection typeization at present, and was used to develop microsensor series.But the existing ammonia gas sensor ubiquity made from gas sensitive the poor selectivity to ammonia, the problem that sensitivity is not high.
The utility model content
The purpose of this utility model is to provide a kind of excellent, highly sensitive to the ammonia selectivity, stable practical coating type ammonia sensor.
The purpose of this utility model is achieved by the following technical programs.
A kind of coating type ammonia sensor, it is characterized in that: it mainly contains by gold electrode, heater strip, gas sensitive, ceramic pipe, platinum filament forms, described gold electrode is plated on the ceramic pipe with the form of film, heater strip is positioned at ceramic pipe, platinum filament docks with gold electrode, gas sensitive is coated in the ceramic pipe surface, and described gas sensitive is the indium oxide gas sensitive.
Described gas sensitive is the nano indium oxide gas sensitive.Indium oxide has response preferably to ammonia, and the sensitivity of the more little detection of granularity is just high more, stability is good more.
Described heater strip is nickel-chromium silk.
Compared with prior art, the utility model has adopted nano indium oxide as gas sensitive, make the utility model have good response, selectivity to ammonia, the detection sensitivity height, detect that lower limit is low, response-recovery fast, advantage such as good stability, working temperature are low.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with specific embodiment the utility model is further described.
As shown in Figure 1, coating type ammonia sensor of the present utility model mainly contains by gold electrode 1, heater strip 2, gas sensitive 3, ceramic pipe 4, platinum filament 5 to be formed, described gold electrode 1 is plated on the ceramic pipe 4 with the form of film, heater strip 2 is positioned at ceramic pipe 4, platinum filament 5 docks with gold electrode 1, and gas sensitive 3 is coated in ceramic pipe 4 surfaces; Described gas sensitive 3 is the nano indium oxide gas sensitive; Described heater strip 2 is nickel-chromium silk.
Claims (3)
1. coating type ammonia sensor, it is characterized in that: it mainly contains by gold electrode, heater strip, gas sensitive, ceramic pipe, platinum filament forms, described gold electrode is plated on the ceramic pipe with the form of film, heater strip is positioned at ceramic pipe, platinum filament docks with gold electrode, gas sensitive is coated in the ceramic pipe surface, and described gas sensitive is the indium oxide gas sensitive.
2. coating type ammonia sensor according to claim 1 is characterized in that: described gas sensitive is the nano indium oxide gas sensitive.
3. coating type ammonia sensor according to claim 1 is characterized in that: described heater strip is nickel-chromium silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201550527U CN201069439Y (en) | 2006-12-21 | 2006-12-21 | Coating ammonia sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201550527U CN201069439Y (en) | 2006-12-21 | 2006-12-21 | Coating ammonia sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069439Y true CN201069439Y (en) | 2008-06-04 |
Family
ID=39490828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201550527U Expired - Fee Related CN201069439Y (en) | 2006-12-21 | 2006-12-21 | Coating ammonia sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201069439Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507035A (en) * | 2011-11-17 | 2012-06-20 | 山东省科学院能源研究所 | Precise temperature measurement device in micro space, probe and temperature measurement method thereof |
| CN104267068A (en) * | 2014-08-26 | 2015-01-07 | 吉林大学 | Acetone gas sensor based on alpha-Fe2O3/SnO2 composite nano fibers and preparation method thereof |
| CN106018480A (en) * | 2016-05-13 | 2016-10-12 | 重庆理工大学 | Indirectly-heated ammonia gas sensor and manufacturing method thereof |
| CN106128004A (en) * | 2016-07-19 | 2016-11-16 | 中国民航大学 | Fire detector based on array gas sensor |
| CN116119718A (en) * | 2022-11-18 | 2023-05-16 | 中冶南方工程技术有限公司 | Gas-sensitive material and preparation method thereof, and ammonia sensor and preparation method thereof |
-
2006
- 2006-12-21 CN CNU2006201550527U patent/CN201069439Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507035A (en) * | 2011-11-17 | 2012-06-20 | 山东省科学院能源研究所 | Precise temperature measurement device in micro space, probe and temperature measurement method thereof |
| CN102507035B (en) * | 2011-11-17 | 2013-05-08 | 山东省科学院能源研究所 | Precise temperature measurement device in micro space, probe and temperature measurement method thereof |
| CN104267068A (en) * | 2014-08-26 | 2015-01-07 | 吉林大学 | Acetone gas sensor based on alpha-Fe2O3/SnO2 composite nano fibers and preparation method thereof |
| CN106018480A (en) * | 2016-05-13 | 2016-10-12 | 重庆理工大学 | Indirectly-heated ammonia gas sensor and manufacturing method thereof |
| CN106018480B (en) * | 2016-05-13 | 2018-08-24 | 重庆理工大学 | A kind of heater-type ammonia gas sensor and preparation method |
| CN106128004A (en) * | 2016-07-19 | 2016-11-16 | 中国民航大学 | Fire detector based on array gas sensor |
| CN116119718A (en) * | 2022-11-18 | 2023-05-16 | 中冶南方工程技术有限公司 | Gas-sensitive material and preparation method thereof, and ammonia sensor and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20121221 |